Improvement in hot-water apparatus



J. F. HUNTER.

Hot Water Apparatus.

' Patented" March 27,- 1860.,

mar/v55 55S UNITED STATES PATENT OFFICE.

JACOB E. HUNTER, OF NEIV YORK, N. 'Y., ASSIGNOR TO HIMSELF, II. A.HUNTER, AND P. I. KELLER, OF SAME PLACE.

IMPROVEMENT IN HOT-WATER APPARATUS.

Specification forming part of Letters Patent No. 27,670, dated March2'7, 1860.

T0 at whom it may concern.-

Be it known that I, JACOB F. HUNTER, of New York, in the county andState of New York, have invented a new and Improved Hotater Apparatusfor Heating Buildings; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to theaccompanyingdrawings, forming a part of this specification, in whichFigure 1 represents a vertical diametrical section taken through myimproved apparatus, exhibiting clearly the arrangement of the hot-waterpipes, 850. Fig. 2 is an exterior view of the apparatus.

Similar letters indicate corresponding parts in both figures.

A represents a water back or boiler of any description, which is mountedupon masonry B B, forming the ash-pit C.

D is the grate, and E is the fire-place. This water-back A consists of ahollow cylindrical vessel surrounding the bed of coals and extending upa sufficient distance to form a guard for the bodyot' heated coals toconfine them within the fire-place.

F G are two coils of metal tubing coiled spirally and arranged onewithin the other, which extend up to any desirable height over thefire-chamber and connect with a main pipe J, to which the pipescommunicating with the registers in the building are attached, asclearly shown by the drawings, Fig. 1, and from the register areturn-pipe is connected, which communicates with the water-back orfire-pot A. In this manner a continuous circulation of the hot water iskept up in the apparatus and throughout the building. The water in itshighly-heated state passing up from the fire-back A and through thespiral coils of pipes F G is rapidly heated on account of the greatsurface exposed to the action of the fire and heated air and a rapidcirculation of hot water through the registers or radiating-surfaces, ofany shape or description, which maybe disposed throughout the'building.

The entire boiling apparatus is inclosed within a metal casing K, fromwhich the products of combustion are conducted off through anescape-flue L to the chimney.

The cold-water supply and appurtenances employed about my apparatus aresimilar to those of the same class of invention now in common use, andtherefore not necessary to represent or describe.

I do not desire to claim as my invention the use of coils of pipes forhot-water apparatuses irrespective of arrangement; but

That I claim as my invention, and desire to secure by Letters Patent,is-

The combination of the coils F G with the main pipe J, fire-back A,return-pipe J, and easing K, when the said coils are both con nectedwith the main pipe J and back A and otherwise constructed, as hereinshown and described, for the purpose set forth.

J. F. HUNTER.

Witnesses: I

MIoH. HUGHES, Cris. M. HUGHES.

